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Finding the Fourth Proportional to 108,483.66, 162,765.51 and 45,310.38

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Solution

The fourth proportional to 108,483.66, 162,765.51 and 45,310.38 is: 67,982.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,483.66 : 162,765.51 = 45,310.38 : x
  2. Step 2: Convert to fraction form
    108,483.66/162,765.51 = 45,310.38/x
  3. Step 3: Cross multiply
    108,483.66x = 162,765.51 × 45,310.38
  4. Step 4: Simplify right side
    108,483.66x = 7,374,967,108.99
  5. Step 5: Solve for x
    x = 7,374,967,108.99/108,483.66
  6. Step 6: Final answer
    x = 67,982.29

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.